anshesita:
The information is there, but you will need to dive further into the objects' parameters for the Interactive Schedule. For example, for the Pipe Straight 19 object, under Scheme Settings > Fields, click the arrow next to the Add button, and select Add Object Parameters. Navigate to the MEP Library 19 > 23 HVAC 19 > 23 20 00 HVAC Piping and Pumps 19 > 23 21 13 Hydronic Piping 19 > Pipe Straight 19. You will see a list of available parameters to list, for the Length select Length (MEP_StraightLength), for the diameter you can select Nominal Size (ConNominalWidth_1) or Main 1 Connection Out... (ConWidth_1). Once these have been added to your schedule, you and a sum for the lengths if desired. It helps to look at an Object's parameters to see which parameters you need before going to the IS (Interactive Schedule).
You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.
David